ATI Nurs 240 Pharmacology Quiz I | Nurselytic

Correct Answer: C

Rationale: The correct answer is C: Increased effect of the antispasmodic drug. Oxybutynin is a antispasmodic drug used for overactive bladder, while haloperidol is an antipsychotic drug. Haloperidol can inhibit the metabolism of oxybutynin, leading to increased levels of oxybutynin in the body. This can result in an increased antispasmodic effect, potentially causing side effects such as dry mouth, constipation, blurred vision, and urinary retention. Monitoring for these side effects is crucial to ensure the client's safety.
Incorrect answers:
A: Hypotension - This is not likely due to the interaction between oxybutynin and haloperidol.
B: Lowered plasma concentrations - The interaction is more likely to increase the concentration of oxybutynin.
D: Decreased effect of the antipsychotic drug - The interaction would not lead to a decreased effect of haloperidol

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